Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Accumulated Other Comprehensive (Loss) Income [Roll Forward]
Balance of AOCI at the beginning of period			$ (2,606)
Other comprehensive income	$ 2,690	$ 4,073	4,163	$ 9,784
Balance of AOCI at the end of the period	1,557		1,557
Changes in Fair Value of Available for Sale Securities
Increase (Decrease) in Accumulated Other Comprehensive (Loss) Income [Roll Forward]
Balance of AOCI at the beginning of period	(1,133)	8,270	(2,606)	2,559
Other comprehensive (loss) income before reclassification	2,766	4,203	4,239	10,278
Amounts reclassified from AOCI for gain on sale of investment securities available for sale included in net income	(76)	(130)	(76)	(494)
Other comprehensive income	2,690	4,073	4,163	9,784
Balance of AOCI at the end of the period	$ 1,557	$ 12,343	$ 1,557	$ 12,343

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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